Apple ID Password getting reset multiple times during the day.

Has anyone ever experienced anything like this? Literally, throughout my days, it has happened two times today - I'll be on my MacBook Pro, and all of the sudden my email app, or iTunes account will request my password. So, naturally I type in my password. After that, I get a message that says my password is incorrect. I try again, making sure to type it correctly, but still an incorrect password. So, I go online, reset my apple id, create a new password, then everything will be all good. Sometimes it takes a few hours, sometimes day, but eventually it happens again. My password gets requested when I start mail, or iTunes - and the new password from the day before will be incorrect.

It's honestly seems like another person is changing my passwords some how. I don't know what the issue is, but I am certainly not changing my passwords.

Any thoughts or advice would be very helpful. This is becoming extremely annoying.

Thanks.